Out of curiosity, what kind of ping do you have now in absolute terms? I think mine is in the region of 1-2ms (Europe), but I do remember having double digit ping.
Side note: if you want to get a ballpark for one way latency, just measure the approximate distance of the undersea cable on Google Maps (in km) and divide by 155. That will give latency (in ms) to +/-10%, excluding any additional last-mile latency (Wi-Fi etc)
